Critical Issue
If you set the oscillator_divider parameter of
a WYSIWYG CRC block to 1 in a design that targets an Arria V, Cyclone
V, or Stratix V device, compilation might fail during synthesis
with the following error:
Error (14024): Parameter "oscillator_divider" of instance
"crcblock" has illegal value "1" assigned to it. Possible parameter
values are: 256, 128, 64, 32, 16, 8, 4, 2
To prevent the error, specify a valid oscillator_divider parameter
value (256, 128, 64, 32, 16, 8, 4, or 2)